import sys
import math

def debug(x, table):
    for name, val in table.items():
        if x is val:
            print('DEBUG: {} -> {}'.format(name, val), file=sys.stderr)
            return None

n, m = map(int, input().split())
edges = {i:set() for i in range(n)}
buy = ['0'] * n
processed = list(range(0, n))

for i in range(m):
    a, b = map(int, input().split())
    edges[a].add(b)
    edges[b].add(a)

# debug(edges, locals())

while 1:
    max_v = max(processed)

    if max_v == -1:
        break

    processed[max_v] = -1

    for node in edges[max_v]:
        buy[node] = '1'
        processed[node] = -1

# debug(buy, locals())

ans = ''.join([str(b) for b in reversed(buy)])
ans = ans.lstrip('0')

print(ans)